1 |
< |
/* Copyright (c) 1993 Regents of the University of California */ |
1 |
> |
/* Copyright (c) 1995 Regents of the University of California */ |
2 |
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3 |
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#ifndef lint |
4 |
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static char SCCSid[] = "$SunId$ LBL"; |
9 |
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*/ |
10 |
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11 |
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#include "standard.h" |
12 |
– |
#include <fcntl.h> |
12 |
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|
13 |
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#ifndef F_SETLKW |
14 |
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|
39 |
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#endif |
40 |
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#endif |
41 |
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/* protection from SYSV signals(!) */ |
42 |
< |
#if defined(sgi) || defined(hpux) |
42 |
> |
#if defined(sgi) |
43 |
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#define guard_io() sighold(SIGALRM) |
44 |
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#define unguard() sigrelse(SIGALRM) |
45 |
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#endif |
47 |
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#define guard_io() 0 |
48 |
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#define unguard() 0 |
49 |
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#endif |
50 |
+ |
|
51 |
+ |
#ifndef linux |
52 |
+ |
extern char *sys_errlist[]; |
53 |
+ |
#endif |
54 |
+ |
|
55 |
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/* rpict command */ |
56 |
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char *rpargv[128] = {"rpict", "-S", "1"}; |
57 |
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int rpargc = 3; |
66 |
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char *outfile = NULL; |
67 |
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int outfd; |
68 |
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long scanorig; |
69 |
< |
int syncfd = -1; /* lock file descriptor */ |
69 |
> |
FILE *syncfp = NULL; /* synchronization file pointer */ |
70 |
> |
int synclst = F_UNLCK; /* synchronization file lock status */ |
71 |
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int nforked = 0; |
72 |
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|
73 |
+ |
#define sflock(t) if ((t)!=synclst) dolock(fileno(syncfp),synclst=t) |
74 |
+ |
|
75 |
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char *progname; |
76 |
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int verbose = 0; |
77 |
+ |
unsigned timelim = 0; |
78 |
+ |
int rvrlim = -1; |
79 |
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|
71 |
– |
extern long lseek(), ftell(); |
72 |
– |
|
80 |
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int gotalrm = 0; |
81 |
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int onalrm() { gotalrm++; } |
82 |
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|
122 |
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case 'p': /* pixel aspect ratio? */ |
123 |
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if (argv[i][2] != 'a' || argv[i][3]) |
124 |
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break; |
125 |
< |
pixaspect = atof(argv[i+1]); |
125 |
> |
pixaspect = atof(argv[++i]); |
126 |
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continue; |
127 |
+ |
case 'T': /* time limit (hours) */ |
128 |
+ |
if (argv[i][2]) |
129 |
+ |
break; |
130 |
+ |
timelim = atof(argv[++i])*3600. + .5; |
131 |
+ |
break; |
132 |
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case 'x': /* overall x resolution */ |
133 |
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if (argv[i][2]) |
134 |
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break; |
149 |
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break; |
150 |
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vmult = atoi(argv[++i]); |
151 |
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continue; |
152 |
+ |
case 'R': /* recover */ |
153 |
+ |
if (argv[i][2]) |
154 |
+ |
break; |
155 |
+ |
rvrlim = 0; |
156 |
+ |
/* fall through */ |
157 |
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case 'F': /* syncronization file */ |
158 |
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if (argv[i][2]) |
159 |
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break; |
160 |
< |
if ((syncfd = open(argv[++i], |
161 |
< |
O_RDWR|O_CREAT, 0666)) < 0) { |
160 |
> |
if ((syncfp = |
161 |
> |
fdopen(open(argv[++i],O_RDWR|O_CREAT,0666),"r+")) == NULL) { |
162 |
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fprintf(stderr, "%s: cannot open\n", |
163 |
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argv[i]); |
164 |
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exit(1); |
191 |
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} |
192 |
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|
193 |
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|
194 |
+ |
dolock(fd, ltyp) /* lock or unlock a file */ |
195 |
+ |
int fd; |
196 |
+ |
int ltyp; |
197 |
+ |
{ |
198 |
+ |
static struct flock fls; /* static so initialized to zeroes */ |
199 |
+ |
|
200 |
+ |
fls.l_type = ltyp; |
201 |
+ |
if (fcntl(fd, F_SETLKW, &fls) < 0) { |
202 |
+ |
fprintf(stderr, "%s: cannot lock/unlock file: %s\n", |
203 |
+ |
progname, sys_errlist[errno]); |
204 |
+ |
exit(1); |
205 |
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} |
206 |
+ |
} |
207 |
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|
208 |
+ |
|
209 |
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init(ac, av) /* set up output file and start rpict */ |
210 |
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int ac; |
211 |
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char **av; |
220 |
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fprintf(stderr, "%s: %s\n", progname, err); |
221 |
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exit(1); |
222 |
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} |
223 |
< |
if (syncfd != -1) { |
224 |
< |
char buf[32]; |
225 |
< |
buf[read(syncfd, buf, sizeof(buf)-1)] = '\0'; |
226 |
< |
sscanf(buf, "%d %d", &hmult, &vmult); |
223 |
> |
if (syncfp != NULL) { |
224 |
> |
sflock(F_RDLCK); |
225 |
> |
fscanf(syncfp, "%d %d", &hmult, &vmult); |
226 |
> |
sflock(F_UNLCK); |
227 |
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} |
228 |
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/* compute piece size */ |
229 |
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hres /= hmult; |
238 |
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rpargv[rpargc] = NULL; |
239 |
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/* open output file */ |
240 |
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if ((outfd = open(outfile, O_WRONLY|O_CREAT|O_EXCL, 0666)) >= 0) { |
241 |
+ |
dolock(outfd, F_WRLCK); |
242 |
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if ((fp = fdopen(dup(outfd), "w")) == NULL) |
243 |
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goto filerr; |
244 |
< |
printargs(ac, av, fp); /* write header */ |
244 |
> |
newheader("RADIANCE", fp); /* create header */ |
245 |
> |
printargs(ac, av, fp); |
246 |
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fprintf(fp, "SOFTWARE= %s\n", VersionID); |
247 |
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fputs(VIEWSTR, fp); |
248 |
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fprintview(&ourview, fp); |
253 |
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putc('\n', fp); |
254 |
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fprtresolu(hres*hmult, vres*vmult, fp); |
255 |
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} else if ((outfd = open(outfile, O_RDWR)) >= 0) { |
256 |
+ |
dolock(outfd, F_RDLCK); |
257 |
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if ((fp = fdopen(dup(outfd), "r+")) == NULL) |
258 |
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goto filerr; |
259 |
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getheader(fp, NULL, NULL); /* skip header */ |
271 |
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scanorig = ftell(fp); /* record position of first scanline */ |
272 |
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if (fclose(fp) == -1) /* done with stream i/o */ |
273 |
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goto filerr; |
274 |
< |
#if NFS |
240 |
< |
sync(); /* flush NFS buffers */ |
241 |
< |
#endif |
274 |
> |
dolock(outfd, F_UNLCK); |
275 |
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/* start rpict process */ |
276 |
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if (open_process(rpd, rpargv) <= 0) { |
277 |
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fprintf(stderr, "%s: cannot start %s\n", progname, rpargv[0]); |
288 |
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exit(1); |
289 |
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} |
290 |
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signal(SIGALRM, onalrm); |
291 |
+ |
if (timelim) |
292 |
+ |
alarm(timelim); |
293 |
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return; |
294 |
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filerr: |
295 |
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fprintf(stderr, "%s: i/o error on file \"%s\"\n", progname, outfile); |
301 |
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nextpiece(xp, yp) /* get next piece assignment */ |
302 |
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int *xp, *yp; |
303 |
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{ |
269 |
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struct flock fls; |
270 |
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char buf[64]; |
271 |
– |
|
304 |
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if (gotalrm) /* someone wants us to quit */ |
305 |
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return(0); |
306 |
< |
if (syncfd != -1) { /* use sync file */ |
307 |
< |
fls.l_type = F_WRLCK; /* gain exclusive access */ |
308 |
< |
fls.l_whence = 0; |
309 |
< |
fls.l_start = 0L; |
310 |
< |
fls.l_len = 0L; |
311 |
< |
fcntl(syncfd, F_SETLKW, &fls); |
312 |
< |
lseek(syncfd, 0L, 0); |
313 |
< |
buf[read(syncfd, buf, sizeof(buf)-1)] = '\0'; |
314 |
< |
if (sscanf(buf, "%*d %*d %d %d", xp, yp) < 2) { |
306 |
> |
if (syncfp != NULL) { /* use sync file */ |
307 |
> |
/* |
308 |
> |
* So we don't necessarily have to lock and unlock the file |
309 |
> |
* multiple times (very slow), we establish an exclusive |
310 |
> |
* lock at the beginning on our synchronization file and |
311 |
> |
* maintain it in the subroutine rvrpiece(). |
312 |
> |
*/ |
313 |
> |
sflock(F_WRLCK); |
314 |
> |
fseek(syncfp, 0L, 0); /* read position */ |
315 |
> |
if (fscanf(syncfp, "%*d %*d %d %d", xp, yp) < 2) { |
316 |
|
*xp = hmult-1; |
317 |
|
*yp = vmult; |
318 |
|
} |
319 |
+ |
if (rvrlim == 0) /* initialize recovery limit */ |
320 |
+ |
rvrlim = *xp*vmult + *yp; |
321 |
+ |
if (rvrpiece(xp, yp)) { /* do stragglers first */ |
322 |
+ |
sflock(F_UNLCK); |
323 |
+ |
return(1); |
324 |
+ |
} |
325 |
|
if (--(*yp) < 0) { /* decrement position */ |
326 |
|
*yp = vmult-1; |
327 |
< |
if (--(*xp) < 0) { /* all done! */ |
328 |
< |
close(syncfd); |
327 |
> |
if (--(*xp) < 0) { /* all done */ |
328 |
> |
sflock(F_UNLCK); |
329 |
|
return(0); |
330 |
|
} |
331 |
|
} |
332 |
< |
sprintf(buf, "%4d %4d\n%4d %4d\n", hmult, vmult, *xp, *yp); |
333 |
< |
lseek(syncfd, 0L, 0); /* write new position */ |
334 |
< |
write(syncfd, buf, strlen(buf)); |
335 |
< |
fls.l_type = F_UNLCK; /* release sync file */ |
297 |
< |
fcntl(syncfd, F_SETLKW, &fls); |
332 |
> |
fseek(syncfp, 0L, 0); /* write new position */ |
333 |
> |
fprintf(syncfp, "%4d %4d\n%4d %4d\n\n", hmult, vmult, *xp, *yp); |
334 |
> |
fflush(syncfp); |
335 |
> |
sflock(F_UNLCK); /* release sync file */ |
336 |
|
return(1); |
337 |
|
} |
338 |
< |
if (fgets(buf, sizeof(buf), stdin) == NULL) /* use stdin */ |
301 |
< |
return(0); |
302 |
< |
if (sscanf(buf, "%d %d", xp, yp) == 2) |
303 |
< |
return(1); |
304 |
< |
fprintf(stderr, "%s: input format error\n", progname); |
305 |
< |
exit(cleanup(1)); |
338 |
> |
return(scanf("%d %d", xp, yp) == 2); /* use stdin */ |
339 |
|
} |
340 |
|
|
341 |
|
|
342 |
|
int |
343 |
+ |
rvrpiece(xp, yp) /* check for recoverable pieces */ |
344 |
+ |
register int *xp, *yp; |
345 |
+ |
{ |
346 |
+ |
static char *pdone = NULL; /* which pieces are done */ |
347 |
+ |
static long readpos = -1; /* how far we've read */ |
348 |
+ |
register int i; |
349 |
+ |
/* |
350 |
+ |
* This routine is called by nextpiece() with an |
351 |
+ |
* exclusive lock on syncfp and the file pointer at the |
352 |
+ |
* appropriate position to read in the finished pieces. |
353 |
+ |
*/ |
354 |
+ |
if (rvrlim < 0) |
355 |
+ |
return(0); /* only check if asked */ |
356 |
+ |
if (pdone == NULL) /* first call */ |
357 |
+ |
pdone = calloc(hmult*vmult, sizeof(char)); |
358 |
+ |
if (pdone == NULL) { |
359 |
+ |
fprintf(stderr, "%s: out of memory\n", progname); |
360 |
+ |
exit(1); |
361 |
+ |
} |
362 |
+ |
if (readpos != -1) /* mark what's been done */ |
363 |
+ |
fseek(syncfp, readpos, 0); |
364 |
+ |
while (fscanf(syncfp, "%d %d", xp, yp) == 2) |
365 |
+ |
pdone[*xp*vmult+*yp] = 1; |
366 |
+ |
if (!feof(syncfp)) { |
367 |
+ |
fprintf(stderr, "%s: format error in sync file\n", progname); |
368 |
+ |
exit(1); |
369 |
+ |
} |
370 |
+ |
readpos = ftell(syncfp); |
371 |
+ |
i = hmult*vmult; /* find an unaccounted for piece */ |
372 |
+ |
while (i-- > rvrlim) |
373 |
+ |
if (!pdone[i]) { |
374 |
+ |
*xp = i / vmult; |
375 |
+ |
*yp = i % vmult; |
376 |
+ |
pdone[i] = 1; /* consider it done */ |
377 |
+ |
return(1); |
378 |
+ |
} |
379 |
+ |
rvrlim = -1; /* nothing left to recover */ |
380 |
+ |
free(pdone); |
381 |
+ |
pdone = NULL; |
382 |
+ |
return(0); |
383 |
+ |
} |
384 |
+ |
|
385 |
+ |
|
386 |
+ |
int |
387 |
|
cleanup(rstat) /* close rpict process and clean up */ |
388 |
|
int rstat; |
389 |
|
{ |
417 |
|
pview.horiz = ourview.horiz / hmult; |
418 |
|
pview.vert = ourview.vert / vmult; |
419 |
|
break; |
420 |
+ |
case VT_CYL: |
421 |
+ |
pview.horiz = ourview.horiz / hmult; |
422 |
+ |
pview.vert = 2.*180./PI*atan( |
423 |
+ |
tan(PI/180./2.*ourview.vert)/vmult ); |
424 |
+ |
break; |
425 |
|
case VT_HEM: |
426 |
|
pview.horiz = 2.*180./PI*asin( |
427 |
|
sin(PI/180./2.*ourview.horiz)/hmult ); |
435 |
|
} |
436 |
|
/* render each piece */ |
437 |
|
while (nextpiece(&xorg, &yorg)) { |
438 |
< |
pview.hoff = ourview.hoff + xorg - 0.5*(hmult-1); |
439 |
< |
pview.voff = ourview.voff + yorg - 0.5*(vmult-1); |
438 |
> |
pview.hoff = ourview.hoff*hmult + xorg - 0.5*(hmult-1); |
439 |
> |
pview.voff = ourview.voff*vmult + yorg - 0.5*(vmult-1); |
440 |
|
fputs(VIEWSTR, torp); |
441 |
|
fprintview(&pview, torp); |
442 |
|
putc('\n', torp); |
504 |
|
/* lock file section so NFS doesn't mess up */ |
505 |
|
fls.l_whence = 0; |
506 |
|
fls.l_type = F_WRLCK; |
507 |
< |
fcntl(outfd, F_SETLKW, &fls); |
507 |
> |
if (fcntl(outfd, F_SETLKW, &fls) < 0) |
508 |
> |
filerr("lock"); |
509 |
|
#endif |
510 |
|
/* write new piece to file */ |
511 |
< |
if (lseek(outfd, fls.l_start, 0) == -1) |
512 |
< |
goto seekerr; |
511 |
> |
if (lseek(outfd, fls.l_start, 0) < 0) |
512 |
> |
filerr("seek"); |
513 |
|
if (hmult == 1) { |
514 |
|
if (writebuf(outfd, (char *)pbuf, |
515 |
|
vr*hr*sizeof(COLR)) != vr*hr*sizeof(COLR)) |
516 |
< |
goto writerr; |
516 |
> |
filerr("write"); |
517 |
|
} else |
518 |
|
for (y = 0; y < vr; y++) { |
519 |
|
if (writebuf(outfd, (char *)(pbuf+y*hr), |
520 |
|
hr*sizeof(COLR)) != hr*sizeof(COLR)) |
521 |
< |
goto writerr; |
521 |
> |
filerr("write"); |
522 |
|
if (y < vr-1 && lseek(outfd, |
523 |
|
(long)(hmult-1)*hr*sizeof(COLR), |
524 |
< |
1) == -1) |
525 |
< |
goto seekerr; |
524 |
> |
1) < 0) |
525 |
> |
filerr("seek"); |
526 |
|
} |
527 |
+ |
#if NFS |
528 |
+ |
fls.l_type = F_UNLCK; /* release lock */ |
529 |
+ |
if (fcntl(outfd, F_SETLKW, &fls) < 0) |
530 |
+ |
filerr("lock"); |
531 |
+ |
#endif |
532 |
|
if (verbose) { /* notify caller */ |
533 |
|
printf("%d %d done\n", xpos, ypos); |
534 |
|
fflush(stdout); |
535 |
|
} |
536 |
< |
if (pid == -1) { /* didn't fork or fork failed */ |
537 |
< |
#if NFS |
538 |
< |
fls.l_type = F_UNLCK; /* release lock */ |
539 |
< |
fcntl(outfd, F_SETLKW, &fls); |
540 |
< |
#endif |
541 |
< |
return(0); |
536 |
> |
if (syncfp != NULL) { /* record what's been done */ |
537 |
> |
sflock(F_WRLCK); |
538 |
> |
fseek(syncfp, 0L, 2); /* append index */ |
539 |
> |
fprintf(syncfp, "%4d %4d\n", xpos, ypos); |
540 |
> |
fflush(syncfp); |
541 |
> |
/*** Unlock not necessary, since |
542 |
> |
sflock(F_UNLCK); _exit() or nextpiece() is next ***/ |
543 |
|
} |
544 |
< |
_exit(0); /* else exit child process (releasing lock) */ |
545 |
< |
seekerr: |
546 |
< |
fprintf(stderr, "%s: seek error on file \"%s\"\n", progname, outfile); |
547 |
< |
_exit(1); |
548 |
< |
writerr: |
549 |
< |
fprintf(stderr, "%s: write error on file \"%s\"\n", progname, outfile); |
544 |
> |
if (pid == -1) /* didn't fork or fork failed */ |
545 |
> |
return(0); |
546 |
> |
_exit(0); /* else exit child process (releasing locks) */ |
547 |
> |
} |
548 |
> |
|
549 |
> |
|
550 |
> |
filerr(t) /* report file error and exit */ |
551 |
> |
char *t; |
552 |
> |
{ |
553 |
> |
fprintf(stderr, "%s: %s error on file \"%s\": %s\n", |
554 |
> |
progname, t, outfile, sys_errlist[errno]); |
555 |
|
_exit(1); |
556 |
|
} |
557 |
|
|